drivers/s390/net/qeth.h

   1 #ifndef __QETH_H__
   2 #define __QETH_H__
   3
   4 #include <linux/if.h>
   5 #include <linux/if_arp.h>
   6
   7 #include <linux/if_tr.h>
   8 #include <linux/trdevice.h>
   9 #include <linux/etherdevice.h>
  10 #include <linux/if_vlan.h>
  11
  12 #include <net/ipv6.h>
  13 #include <linux/in6.h>
  14 #include <net/if_inet6.h>
  15 #include <net/addrconf.h>
  16
  17
  18 #include <linux/bitops.h>
  19
  20 #include <asm/debug.h>
  21 #include <asm/qdio.h>
  22 #include <asm/ccwdev.h>
  23 #include <asm/ccwgroup.h>
  24
  25 #include "qeth_mpc.h"
  26
  27 #define VERSION_QETH_H          "$Revision: 1.141 $"
  28
  29 #ifdef CONFIG_QETH_IPV6
  30 #define QETH_VERSION_IPV6       ":IPv6"
  31 #else
  32 #define QETH_VERSION_IPV6       ""
  33 #endif
  34 #ifdef CONFIG_QETH_VLAN
  35 #define QETH_VERSION_VLAN       ":VLAN"
  36 #else
  37 #define QETH_VERSION_VLAN       ""
  38 #endif
  39
  40 /**
  41  * Debug Facility stuff
  42  */
  43 #define QETH_DBF_SETUP_NAME "qeth_setup"
  44 #define QETH_DBF_SETUP_LEN 8
  45 #define QETH_DBF_SETUP_PAGES 8
  46 #define QETH_DBF_SETUP_NR_AREAS 1
  47 #define QETH_DBF_SETUP_LEVEL 5
  48
  49 #define QETH_DBF_MISC_NAME "qeth_misc"
  50 #define QETH_DBF_MISC_LEN 128
  51 #define QETH_DBF_MISC_PAGES 2
  52 #define QETH_DBF_MISC_NR_AREAS 1
  53 #define QETH_DBF_MISC_LEVEL 2
  54
  55 #define QETH_DBF_DATA_NAME "qeth_data"
  56 #define QETH_DBF_DATA_LEN 96
  57 #define QETH_DBF_DATA_PAGES 8
  58 #define QETH_DBF_DATA_NR_AREAS 1
  59 #define QETH_DBF_DATA_LEVEL 2
  60
  61 #define QETH_DBF_CONTROL_NAME "qeth_control"
  62 #define QETH_DBF_CONTROL_LEN 256
  63 #define QETH_DBF_CONTROL_PAGES 8
  64 #define QETH_DBF_CONTROL_NR_AREAS 2
  65 #define QETH_DBF_CONTROL_LEVEL 5
  66
  67 #define QETH_DBF_TRACE_NAME "qeth_trace"
  68 #define QETH_DBF_TRACE_LEN 8
  69 #define QETH_DBF_TRACE_PAGES 4
  70 #define QETH_DBF_TRACE_NR_AREAS 2
  71 #define QETH_DBF_TRACE_LEVEL 3
  72 extern debug_info_t *qeth_dbf_trace;
  73
  74 #define QETH_DBF_SENSE_NAME "qeth_sense"
  75 #define QETH_DBF_SENSE_LEN 64
  76 #define QETH_DBF_SENSE_PAGES 2
  77 #define QETH_DBF_SENSE_NR_AREAS 1
  78 #define QETH_DBF_SENSE_LEVEL 2
  79
  80 #define QETH_DBF_QERR_NAME "qeth_qerr"
  81 #define QETH_DBF_QERR_LEN 8
  82 #define QETH_DBF_QERR_PAGES 2
  83 #define QETH_DBF_QERR_NR_AREAS 2
  84 #define QETH_DBF_QERR_LEVEL 2
  85
  86 #define QETH_DBF_TEXT(name,level,text) \
  87         do { \
  88                 debug_text_event(qeth_dbf_##name,level,text); \
  89         } while (0)
  90
  91 #define QETH_DBF_HEX(name,level,addr,len) \
  92         do { \
  93                 debug_event(qeth_dbf_##name,level,(void*)(addr),len); \
  94         } while (0)
  95
  96 DECLARE_PER_CPU(char[256], qeth_dbf_txt_buf);
  97
  98 #define QETH_DBF_TEXT_(name,level,text...)                              \
  99         do {                                                            \
 100                 char* dbf_txt_buf = get_cpu_var(qeth_dbf_txt_buf);      \
 101                 sprintf(dbf_txt_buf, text);                             \
 102                 debug_text_event(qeth_dbf_##name,level,dbf_txt_buf);    \
 103                 put_cpu_var(qeth_dbf_txt_buf);                          \
 104         } while (0)
 105
 106 #define QETH_DBF_SPRINTF(name,level,text...) \
 107         do { \
 108                 debug_sprintf_event(qeth_dbf_trace, level, ##text ); \
 109                 debug_sprintf_event(qeth_dbf_trace, level, text ); \
 110         } while (0)
 111
 112 /**
 113  * some more debug stuff
 114  */
 115 #define PRINTK_HEADER   "qeth: "
 116
 117 #define HEXDUMP16(importance,header,ptr) \
 118 PRINT_##importance(header "%02x %02x %02x %02x  %02x %02x %02x %02x  " \
 119                    "%02x %02x %02x %02x  %02x %02x %02x %02x\n", \
 120                    *(((char*)ptr)),*(((char*)ptr)+1),*(((char*)ptr)+2), \
 121                    *(((char*)ptr)+3),*(((char*)ptr)+4),*(((char*)ptr)+5), \
 122                    *(((char*)ptr)+6),*(((char*)ptr)+7),*(((char*)ptr)+8), \
 123                    *(((char*)ptr)+9),*(((char*)ptr)+10),*(((char*)ptr)+11), \
 124                    *(((char*)ptr)+12),*(((char*)ptr)+13), \
 125                    *(((char*)ptr)+14),*(((char*)ptr)+15)); \
 126 PRINT_##importance(header "%02x %02x %02x %02x  %02x %02x %02x %02x  " \
 127                    "%02x %02x %02x %02x  %02x %02x %02x %02x\n", \
 128                    *(((char*)ptr)+16),*(((char*)ptr)+17), \
 129                    *(((char*)ptr)+18),*(((char*)ptr)+19), \
 130                    *(((char*)ptr)+20),*(((char*)ptr)+21), \
 131                    *(((char*)ptr)+22),*(((char*)ptr)+23), \
 132                    *(((char*)ptr)+24),*(((char*)ptr)+25), \
 133                    *(((char*)ptr)+26),*(((char*)ptr)+27), \
 134                    *(((char*)ptr)+28),*(((char*)ptr)+29), \
 135                    *(((char*)ptr)+30),*(((char*)ptr)+31));
 136
 137 static inline void
 138 qeth_hex_dump(unsigned char *buf, size_t len)
 139 {
 140         size_t i;
 141
 142         for (i = 0; i < len; i++) {
 143                 if (i && !(i % 16))
 144                         printk("\n");
 145                 printk("%02x ", *(buf + i));
 146         }
 147         printk("\n");
 148 }
 149
 150 #define SENSE_COMMAND_REJECT_BYTE 0
 151 #define SENSE_COMMAND_REJECT_FLAG 0x80
 152 #define SENSE_RESETTING_EVENT_BYTE 1
 153 #define SENSE_RESETTING_EVENT_FLAG 0x80
 154
 155 #define atomic_swap(a,b) xchg((int *)a.counter, b)
 156
 157 /*
 158  * Common IO related definitions
 159  */
 160 extern struct device *qeth_root_dev;
 161 extern struct ccw_driver qeth_ccw_driver;
 162 extern struct ccwgroup_driver qeth_ccwgroup_driver;
 163
 164 #define CARD_RDEV(card) card->read.ccwdev
 165 #define CARD_WDEV(card) card->write.ccwdev
 166 #define CARD_DDEV(card) card->data.ccwdev
 167 #define CARD_BUS_ID(card) card->gdev->dev.bus_id
 168 #define CARD_RDEV_ID(card) card->read.ccwdev->dev.bus_id
 169 #define CARD_WDEV_ID(card) card->write.ccwdev->dev.bus_id
 170 #define CARD_DDEV_ID(card) card->data.ccwdev->dev.bus_id
 171 #define CHANNEL_ID(channel) channel->ccwdev->dev.bus_id
 172
 173 #define CARD_FROM_CDEV(cdev) (struct qeth_card *) \
 174                 ((struct ccwgroup_device *)cdev->dev.driver_data)\
 175                 ->dev.driver_data;
 176
 177 /**
 178  * card stuff
 179  */
 180 #ifdef CONFIG_QETH_PERF_STATS
 181 struct qeth_perf_stats {
 182         unsigned int bufs_rec;
 183         unsigned int bufs_sent;
 184
 185         unsigned int skbs_sent_pack;
 186         unsigned int bufs_sent_pack;
 187
 188         unsigned int sc_dp_p;
 189         unsigned int sc_p_dp;
 190         /* qdio_input_handler: number of times called, time spent in */
 191         __u64 inbound_start_time;
 192         unsigned int inbound_cnt;
 193         unsigned int inbound_time;
 194         /* qeth_send_packet: number of times called, time spent in */
 195         __u64 outbound_start_time;
 196         unsigned int outbound_cnt;
 197         unsigned int outbound_time;
 198         /* qdio_output_handler: number of times called, time spent in */
 199         __u64 outbound_handler_start_time;
 200         unsigned int outbound_handler_cnt;
 201         unsigned int outbound_handler_time;
 202         /* number of calls to and time spent in do_QDIO for inbound queue */
 203         __u64 inbound_do_qdio_start_time;
 204         unsigned int inbound_do_qdio_cnt;
 205         unsigned int inbound_do_qdio_time;
 206         /* number of calls to and time spent in do_QDIO for outbound queues */
 207         __u64 outbound_do_qdio_start_time;
 208         unsigned int outbound_do_qdio_cnt;
 209         unsigned int outbound_do_qdio_time;
 210         /* eddp data */
 211         unsigned int large_send_bytes;
 212         unsigned int large_send_cnt;
 213         unsigned int sg_skbs_sent;
 214         unsigned int sg_frags_sent;
 215 };
 216 #endif /* CONFIG_QETH_PERF_STATS */
 217
 218 /* Routing stuff */
 219 struct qeth_routing_info {
 220         enum qeth_routing_types type;
 221 };
 222
 223 /* IPA stuff */
 224 struct qeth_ipa_info {
 225         __u32 supported_funcs;
 226         __u32 enabled_funcs;
 227 };
 228
 229 static inline int
 230 qeth_is_ipa_supported(struct qeth_ipa_info *ipa, enum qeth_ipa_funcs func)
 231 {
 232         return (ipa->supported_funcs & func);
 233 }
 234
 235 static inline int
 236 qeth_is_ipa_enabled(struct qeth_ipa_info *ipa, enum qeth_ipa_funcs func)
 237 {
 238         return (ipa->supported_funcs & ipa->enabled_funcs & func);
 239 }
 240
 241 #define qeth_adp_supported(c,f) \
 242         qeth_is_ipa_supported(&c->options.adp, f)
 243 #define qeth_adp_enabled(c,f) \
 244         qeth_is_ipa_enabled(&c->options.adp, f)
 245 #define qeth_is_supported(c,f) \
 246         qeth_is_ipa_supported(&c->options.ipa4, f)
 247 #define qeth_is_enabled(c,f) \
 248         qeth_is_ipa_enabled(&c->options.ipa4, f)
 249 #ifdef CONFIG_QETH_IPV6
 250 #define qeth_is_supported6(c,f) \
 251         qeth_is_ipa_supported(&c->options.ipa6, f)
 252 #define qeth_is_enabled6(c,f) \
 253         qeth_is_ipa_enabled(&c->options.ipa6, f)
 254 #else /* CONFIG_QETH_IPV6 */
 255 #define qeth_is_supported6(c,f) 0
 256 #define qeth_is_enabled6(c,f) 0
 257 #endif /* CONFIG_QETH_IPV6 */
 258 #define qeth_is_ipafunc_supported(c,prot,f) \
 259          (prot==QETH_PROT_IPV6)? qeth_is_supported6(c,f):qeth_is_supported(c,f)
 260 #define qeth_is_ipafunc_enabled(c,prot,f) \
 261          (prot==QETH_PROT_IPV6)? qeth_is_enabled6(c,f):qeth_is_enabled(c,f)
 262
 263
 264 #define QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT 0x0101
 265 #define QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT 0x0101
 266 #define QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT 0x4108
 267 #define QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT 0x5108
 268
 269 #define QETH_MODELLIST_ARRAY \
 270         {{0x1731,0x01,0x1732,0x01,QETH_CARD_TYPE_OSAE,1, \
 271         QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT, \
 272         QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT, \
 273         QETH_MAX_QUEUES,0}, \
 274         {0x1731,0x05,0x1732,0x05,QETH_CARD_TYPE_IQD,0, \
 275         QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT, \
 276         QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT, \
 277         QETH_MAX_QUEUES,0x103}, \
 278         {0,0,0,0,0,0,0,0,0}}
 279
 280 #define QETH_REAL_CARD          1
 281 #define QETH_VLAN_CARD          2
 282 #define QETH_BUFSIZE            4096
 283
 284 /**
 285  * some more defs
 286  */
 287 #define IF_NAME_LEN             16
 288 #define QETH_TX_TIMEOUT         100 * HZ
 289 #define QETH_HEADER_SIZE        32
 290 #define MAX_PORTNO              15
 291 #define QETH_FAKE_LL_LEN_ETH    ETH_HLEN
 292 #define QETH_FAKE_LL_LEN_TR     (sizeof(struct trh_hdr)-TR_MAXRIFLEN+sizeof(struct trllc))
 293 #define QETH_FAKE_LL_V6_ADDR_POS 24
 294
 295 /*IPv6 address autoconfiguration stuff*/
 296 #define UNIQUE_ID_IF_CREATE_ADDR_FAILED 0xfffe
 297 #define UNIQUE_ID_NOT_BY_CARD           0x10000
 298
 299 /*****************************************************************************/
 300 /* QDIO queue and buffer handling                                            */
 301 /*****************************************************************************/
 302 #define QETH_MAX_QUEUES 4
 303 #define QETH_IN_BUF_SIZE_DEFAULT 65536
 304 #define QETH_IN_BUF_COUNT_DEFAULT 16
 305 #define QETH_IN_BUF_COUNT_MIN 8
 306 #define QETH_IN_BUF_COUNT_MAX 128
 307 #define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12)
 308 #define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \
 309                 ((card)->qdio.in_buf_pool.buf_count / 2)
 310
 311 /* buffers we have to be behind before we get a PCI */
 312 #define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1)
 313 /*enqueued free buffers left before we get a PCI*/
 314 #define QETH_PCI_THRESHOLD_B(card) 0
 315 /*not used unless the microcode gets patched*/
 316 #define QETH_PCI_TIMER_VALUE(card) 3
 317
 318 #define QETH_MIN_INPUT_THRESHOLD 1
 319 #define QETH_MAX_INPUT_THRESHOLD 500
 320 #define QETH_MIN_OUTPUT_THRESHOLD 1
 321 #define QETH_MAX_OUTPUT_THRESHOLD 300
 322
 323 /* priority queing */
 324 #define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING
 325 #define QETH_DEFAULT_QUEUE    2
 326 #define QETH_NO_PRIO_QUEUEING 0
 327 #define QETH_PRIO_Q_ING_PREC  1
 328 #define QETH_PRIO_Q_ING_TOS   2
 329 #define IP_TOS_LOWDELAY 0x10
 330 #define IP_TOS_HIGHTHROUGHPUT 0x08
 331 #define IP_TOS_HIGHRELIABILITY 0x04
 332 #define IP_TOS_NOTIMPORTANT 0x02
 333
 334 /* Packing */
 335 #define QETH_LOW_WATERMARK_PACK  2
 336 #define QETH_HIGH_WATERMARK_PACK 5
 337 #define QETH_WATERMARK_PACK_FUZZ 1
 338
 339 #define QETH_IP_HEADER_SIZE 40
 340
 341 struct qeth_hdr_layer3 {
 342         __u8  id;
 343         __u8  flags;
 344         __u16 inbound_checksum; /*TSO:__u16 seqno */
 345         __u32 token;            /*TSO: __u32 reserved */
 346         __u16 length;
 347         __u8  vlan_prio;
 348         __u8  ext_flags;
 349         __u16 vlan_id;
 350         __u16 frame_offset;
 351         __u8  dest_addr[16];
 352 } __attribute__ ((packed));
 353
 354 struct qeth_hdr_layer2 {
 355         __u8 id;
 356         __u8 flags[3];
 357         __u8 port_no;
 358         __u8 hdr_length;
 359         __u16 pkt_length;
 360         __u16 seq_no;
 361         __u16 vlan_id;
 362         __u32 reserved;
 363         __u8 reserved2[16];
 364 } __attribute__ ((packed));
 365
 366 struct qeth_hdr {
 367         union {
 368                 struct qeth_hdr_layer2 l2;
 369                 struct qeth_hdr_layer3 l3;
 370         } hdr;
 371 } __attribute__ ((packed));
 372
 373 /*TCP Segmentation Offload header*/
 374 struct qeth_hdr_ext_tso {
 375         __u16 hdr_tot_len;
 376         __u8  imb_hdr_no;
 377         __u8  reserved;
 378         __u8  hdr_type;
 379         __u8  hdr_version;
 380         __u16 hdr_len;
 381         __u32 payload_len;
 382         __u16 mss;
 383         __u16 dg_hdr_len;
 384         __u8  padding[16];
 385 } __attribute__ ((packed));
 386
 387 struct qeth_hdr_tso {
 388         struct qeth_hdr hdr;    /*hdr->hdr.l3.xxx*/
 389         struct qeth_hdr_ext_tso ext;
 390 } __attribute__ ((packed));
 391
 392
 393 /* flags for qeth_hdr.flags */
 394 #define QETH_HDR_PASSTHRU 0x10
 395 #define QETH_HDR_IPV6     0x80
 396 #define QETH_HDR_CAST_MASK 0x07
 397 enum qeth_cast_flags {
 398         QETH_CAST_UNICAST   = 0x06,
 399         QETH_CAST_MULTICAST = 0x04,
 400         QETH_CAST_BROADCAST = 0x05,
 401         QETH_CAST_ANYCAST   = 0x07,
 402         QETH_CAST_NOCAST    = 0x00,
 403 };
 404
 405 enum qeth_layer2_frame_flags {
 406         QETH_LAYER2_FLAG_MULTICAST = 0x01,
 407         QETH_LAYER2_FLAG_BROADCAST = 0x02,
 408         QETH_LAYER2_FLAG_UNICAST   = 0x04,
 409         QETH_LAYER2_FLAG_VLAN      = 0x10,
 410 };
 411
 412 enum qeth_header_ids {
 413         QETH_HEADER_TYPE_LAYER3 = 0x01,
 414         QETH_HEADER_TYPE_LAYER2 = 0x02,
 415         QETH_HEADER_TYPE_TSO    = 0x03,
 416 };
 417 /* flags for qeth_hdr.ext_flags */
 418 #define QETH_HDR_EXT_VLAN_FRAME       0x01
 419 #define QETH_HDR_EXT_TOKEN_ID         0x02
 420 #define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04
 421 #define QETH_HDR_EXT_SRC_MAC_ADDR     0x08
 422 #define QETH_HDR_EXT_CSUM_HDR_REQ     0x10
 423 #define QETH_HDR_EXT_CSUM_TRANSP_REQ  0x20
 424 #define QETH_HDR_EXT_UDP_TSO          0x40 /*bit off for TCP*/
 425
 426 static inline int
 427 qeth_is_last_sbale(struct qdio_buffer_element *sbale)
 428 {
 429         return (sbale->flags & SBAL_FLAGS_LAST_ENTRY);
 430 }
 431
 432 enum qeth_qdio_buffer_states {
 433         /*
 434          * inbound: read out by driver; owned by hardware in order to be filled
 435          * outbound: owned by driver in order to be filled
 436          */
 437         QETH_QDIO_BUF_EMPTY,
 438         /*
 439          * inbound: filled by hardware; owned by driver in order to be read out
 440          * outbound: filled by driver; owned by hardware in order to be sent
 441          */
 442         QETH_QDIO_BUF_PRIMED,
 443 };
 444
 445 enum qeth_qdio_info_states {
 446         QETH_QDIO_UNINITIALIZED,
 447         QETH_QDIO_ALLOCATED,
 448         QETH_QDIO_ESTABLISHED,
 449 };
 450
 451 struct qeth_buffer_pool_entry {
 452         struct list_head list;
 453         struct list_head init_list;
 454         void *elements[QDIO_MAX_ELEMENTS_PER_BUFFER];
 455 };
 456
 457 struct qeth_qdio_buffer_pool {
 458         struct list_head entry_list;
 459         int buf_count;
 460 };
 461
 462 struct qeth_qdio_buffer {
 463         struct qdio_buffer *buffer;
 464         volatile enum qeth_qdio_buffer_states state;
 465         /* the buffer pool entry currently associated to this buffer */
 466         struct qeth_buffer_pool_entry *pool_entry;
 467 };
 468
 469 struct qeth_qdio_q {
 470         struct qdio_buffer qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
 471         struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
 472         /*
 473          * buf_to_init means "buffer must be initialized by driver and must
 474          * be made available for hardware" -> state is set to EMPTY
 475          */
 476         volatile int next_buf_to_init;
 477 } __attribute__ ((aligned(256)));
 478
 479 /* possible types of qeth large_send support */
 480 enum qeth_large_send_types {
 481         QETH_LARGE_SEND_NO,
 482         QETH_LARGE_SEND_EDDP,
 483         QETH_LARGE_SEND_TSO,
 484 };
 485
 486 struct qeth_qdio_out_buffer {
 487         struct qdio_buffer *buffer;
 488         atomic_t state;
 489         volatile int next_element_to_fill;
 490         struct sk_buff_head skb_list;
 491         struct list_head ctx_list;
 492 };
 493
 494 struct qeth_card;
 495
 496 enum qeth_out_q_states {
 497        QETH_OUT_Q_UNLOCKED,
 498        QETH_OUT_Q_LOCKED,
 499        QETH_OUT_Q_LOCKED_FLUSH,
 500 };
 501
 502 struct qeth_qdio_out_q {
 503         struct qdio_buffer qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
 504         struct qeth_qdio_out_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
 505         int queue_no;
 506         struct qeth_card *card;
 507         atomic_t state;
 508         volatile int do_pack;
 509         /*
 510          * index of buffer to be filled by driver; state EMPTY or PACKING
 511          */
 512         volatile int next_buf_to_fill;
 513         /*
 514          * number of buffers that are currently filled (PRIMED)
 515          * -> these buffers are hardware-owned
 516          */
 517         atomic_t used_buffers;
 518         /* indicates whether PCI flag must be set (or if one is outstanding) */
 519         atomic_t set_pci_flags_count;
 520 } __attribute__ ((aligned(256)));
 521
 522 struct qeth_qdio_info {
 523         volatile enum qeth_qdio_info_states state;
 524         /* input */
 525         struct qeth_qdio_q *in_q;
 526         struct qeth_qdio_buffer_pool in_buf_pool;
 527         struct qeth_qdio_buffer_pool init_pool;
 528         int in_buf_size;
 529
 530         /* output */
 531         int no_out_queues;
 532         struct qeth_qdio_out_q **out_qs;
 533
 534         /* priority queueing */
 535         int do_prio_queueing;
 536         int default_out_queue;
 537 };
 538
 539 enum qeth_send_errors {
 540         QETH_SEND_ERROR_NONE,
 541         QETH_SEND_ERROR_LINK_FAILURE,
 542         QETH_SEND_ERROR_RETRY,
 543         QETH_SEND_ERROR_KICK_IT,
 544 };
 545
 546 #define QETH_ETH_MAC_V4      0x0100 /* like v4 */
 547 #define QETH_ETH_MAC_V6      0x3333 /* like v6 */
 548 /* tr mc mac is longer, but that will be enough to detect mc frames */
 549 #define QETH_TR_MAC_NC       0xc000 /* non-canonical */
 550 #define QETH_TR_MAC_C        0x0300 /* canonical */
 551
 552 #define DEFAULT_ADD_HHLEN 0
 553 #define MAX_ADD_HHLEN 1024
 554
 555 /**
 556  * buffer stuff for read channel
 557  */
 558 #define QETH_CMD_BUFFER_NO      8
 559
 560 /**
 561  *  channel state machine
 562  */
 563 enum qeth_channel_states {
 564         CH_STATE_UP,
 565         CH_STATE_DOWN,
 566         CH_STATE_ACTIVATING,
 567         CH_STATE_HALTED,
 568         CH_STATE_STOPPED,
 569 };
 570 /**
 571  * card state machine
 572  */
 573 enum qeth_card_states {
 574         CARD_STATE_DOWN,
 575         CARD_STATE_HARDSETUP,
 576         CARD_STATE_SOFTSETUP,
 577         CARD_STATE_UP,
 578         CARD_STATE_RECOVER,
 579 };
 580
 581 /**
 582  * Protocol versions
 583  */
 584 enum qeth_prot_versions {
 585         QETH_PROT_SNA  = 0x0001,
 586         QETH_PROT_IPV4 = 0x0004,
 587         QETH_PROT_IPV6 = 0x0006,
 588 };
 589
 590 enum qeth_ip_types {
 591         QETH_IP_TYPE_NORMAL,
 592         QETH_IP_TYPE_VIPA,
 593         QETH_IP_TYPE_RXIP,
 594         QETH_IP_TYPE_DEL_ALL_MC,
 595 };
 596
 597 enum qeth_cmd_buffer_state {
 598         BUF_STATE_FREE,
 599         BUF_STATE_LOCKED,
 600         BUF_STATE_PROCESSED,
 601 };
 602 /**
 603  * IP address and multicast list
 604  */
 605 struct qeth_ipaddr {
 606         struct list_head entry;
 607         enum qeth_ip_types type;
 608         enum qeth_ipa_setdelip_flags set_flags;
 609         enum qeth_ipa_setdelip_flags del_flags;
 610         int is_multicast;
 611         volatile int users;
 612         enum qeth_prot_versions proto;
 613         unsigned char mac[OSA_ADDR_LEN];
 614         union {
 615                 struct {
 616                         unsigned int addr;
 617                         unsigned int mask;
 618                 } a4;
 619                 struct {
 620                         struct in6_addr addr;
 621                         unsigned int pfxlen;
 622                 } a6;
 623         } u;
 624 };
 625
 626 struct qeth_ipato_entry {
 627         struct list_head entry;
 628         enum qeth_prot_versions proto;
 629         char addr[16];
 630         int mask_bits;
 631 };
 632
 633 struct qeth_ipato {
 634         int enabled;
 635         int invert4;
 636         int invert6;
 637         struct list_head entries;
 638 };
 639
 640 struct qeth_channel;
 641
 642 struct qeth_cmd_buffer {
 643         enum qeth_cmd_buffer_state state;
 644         struct qeth_channel *channel;
 645         unsigned char *data;
 646         int rc;
 647         void (*callback) (struct qeth_channel *, struct qeth_cmd_buffer *);
 648 };
 649
 650
 651 /**
 652  * definition of a qeth channel, used for read and write
 653  */
 654 struct qeth_channel {
 655         enum qeth_channel_states state;
 656         struct ccw1 ccw;
 657         spinlock_t iob_lock;
 658         wait_queue_head_t wait_q;
 659         struct tasklet_struct irq_tasklet;
 660         struct ccw_device *ccwdev;
 661 /*command buffer for control data*/
 662         struct qeth_cmd_buffer iob[QETH_CMD_BUFFER_NO];
 663         atomic_t irq_pending;
 664         volatile int io_buf_no;
 665         volatile int buf_no;
 666 };
 667
 668 /**
 669  *  OSA card related definitions
 670  */
 671 struct qeth_token {
 672         __u32 issuer_rm_w;
 673         __u32 issuer_rm_r;
 674         __u32 cm_filter_w;
 675         __u32 cm_filter_r;
 676         __u32 cm_connection_w;
 677         __u32 cm_connection_r;
 678         __u32 ulp_filter_w;
 679         __u32 ulp_filter_r;
 680         __u32 ulp_connection_w;
 681         __u32 ulp_connection_r;
 682 };
 683
 684 struct qeth_seqno {
 685         __u32 trans_hdr;
 686         __u32 pdu_hdr;
 687         __u32 pdu_hdr_ack;
 688         __u16 ipa;
 689 };
 690
 691 struct qeth_reply {
 692         struct list_head list;
 693         wait_queue_head_t wait_q;
 694         int (*callback)(struct qeth_card *,struct qeth_reply *,unsigned long);
 695         u32 seqno;
 696         unsigned long offset;
 697         int received;
 698         int rc;
 699         void *param;
 700         struct qeth_card *card;
 701         atomic_t refcnt;
 702 };
 703
 704 #define QETH_BROADCAST_WITH_ECHO    1
 705 #define QETH_BROADCAST_WITHOUT_ECHO 2
 706
 707 struct qeth_card_blkt {
 708         int time_total;
 709         int inter_packet;
 710         int inter_packet_jumbo;
 711 };
 712
 713
 714
 715 struct qeth_card_info {
 716         unsigned short unit_addr2;
 717         unsigned short cula;
 718         unsigned short chpid;
 719         __u16 func_level;
 720         char mcl_level[QETH_MCL_LENGTH + 1];
 721         int guestlan;
 722         int layer2_mac_registered;
 723         int portname_required;
 724         int portno;
 725         char portname[9];
 726         enum qeth_card_types type;
 727         enum qeth_link_types link_type;
 728         int is_multicast_different;
 729         int initial_mtu;
 730         int max_mtu;
 731         int broadcast_capable;
 732         int unique_id;
 733         struct qeth_card_blkt blkt;
 734         __u32 csum_mask;
 735 };
 736
 737 struct qeth_card_options {
 738         struct qeth_routing_info route4;
 739         struct qeth_ipa_info ipa4;
 740         struct qeth_ipa_info adp; /*Adapter parameters*/
 741 #ifdef CONFIG_QETH_IPV6
 742         struct qeth_routing_info route6;
 743         struct qeth_ipa_info ipa6;
 744 #endif /* QETH_IPV6 */
 745         enum qeth_checksum_types checksum_type;
 746         int broadcast_mode;
 747         int macaddr_mode;
 748         int fake_broadcast;
 749         int add_hhlen;
 750         int fake_ll;
 751         int layer2;
 752         enum qeth_large_send_types large_send;
 753 };
 754
 755 /*
 756  * thread bits for qeth_card thread masks
 757  */
 758 enum qeth_threads {
 759         QETH_SET_IP_THREAD  = 1,
 760         QETH_RECOVER_THREAD = 2,
 761 };
 762
 763 struct qeth_card {
 764         struct list_head list;
 765         enum qeth_card_states state;
 766         int lan_online;
 767         spinlock_t lock;
 768 /*hardware and sysfs stuff*/
 769         struct ccwgroup_device *gdev;
 770         struct qeth_channel read;
 771         struct qeth_channel write;
 772         struct qeth_channel data;
 773
 774         struct net_device *dev;
 775         struct net_device_stats stats;
 776
 777         struct qeth_card_info info;
 778         struct qeth_token token;
 779         struct qeth_seqno seqno;
 780         struct qeth_card_options options;
 781
 782         wait_queue_head_t wait_q;
 783 #ifdef CONFIG_QETH_VLAN
 784         spinlock_t vlanlock;
 785         struct vlan_group *vlangrp;
 786 #endif
 787         struct work_struct kernel_thread_starter;
 788         spinlock_t thread_mask_lock;
 789         volatile unsigned long thread_start_mask;
 790         volatile unsigned long thread_allowed_mask;
 791         volatile unsigned long thread_running_mask;
 792         spinlock_t ip_lock;
 793         struct list_head ip_list;
 794         struct list_head *ip_tbd_list;
 795         struct qeth_ipato ipato;
 796         struct list_head cmd_waiter_list;
 797         /* QDIO buffer handling */
 798         struct qeth_qdio_info qdio;
 799 #ifdef CONFIG_QETH_PERF_STATS
 800         struct qeth_perf_stats perf_stats;
 801 #endif /* CONFIG_QETH_PERF_STATS */
 802         int use_hard_stop;
 803         int (*orig_hard_header)(struct sk_buff *,struct net_device *,
 804                                 unsigned short,void *,void *,unsigned);
 805 };
 806
 807 struct qeth_card_list_struct {
 808         struct list_head list;
 809         rwlock_t rwlock;
 810 };
 811
 812 extern struct qeth_card_list_struct qeth_card_list;
 813
 814 /*notifier list */
 815 struct qeth_notify_list_struct {
 816         struct list_head list;
 817         struct task_struct *task;
 818         int signum;
 819 };
 820 extern spinlock_t qeth_notify_lock;
 821 extern struct list_head qeth_notify_list;
 822
 823 /*some helper functions*/
 824
 825 #define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "")
 826
 827 static inline __u8
 828 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
 829 {
 830         switch (link_type) {
 831         case QETH_LINK_TYPE_HSTR:
 832                 return 2;
 833         default:
 834                 return 1;
 835         }
 836 }
 837
 838 static inline int
 839 qeth_realloc_headroom(struct qeth_card *card, struct sk_buff **skb, int size)
 840 {
 841         struct sk_buff *new_skb = NULL;
 842
 843         if (skb_headroom(*skb) < size){
 844                 new_skb = skb_realloc_headroom(*skb, size);
 845                 if (!new_skb) {
 846                         PRINT_ERR("qeth_prepare_skb: could "
 847                                   "not realloc headroom for qeth_hdr "
 848                                   "on interface %s", QETH_CARD_IFNAME(card));
 849                         return -ENOMEM;
 850                 }
 851                 *skb = new_skb;
 852         }
 853         return 0;
 854 }
 855
 856 static inline struct sk_buff *
 857 qeth_pskb_unshare(struct sk_buff *skb, int pri)
 858 {
 859         struct sk_buff *nskb;
 860         if (!skb_cloned(skb))
 861                 return skb;
 862         nskb = skb_copy(skb, pri);
 863         kfree_skb(skb); /* free our shared copy */
 864         return nskb;
 865 }
 866
 867 static inline void *
 868 qeth_push_skb(struct qeth_card *card, struct sk_buff **skb, int size)
 869 {
 870         void *hdr;
 871
 872         hdr = (void *) skb_push(*skb, size);
 873         /*
 874          * sanity check, the Linux memory allocation scheme should
 875          * never present us cases like this one (the qdio header size plus
 876          * the first 40 bytes of the paket cross a 4k boundary)
 877          */
 878         if ((((unsigned long) hdr) & (~(PAGE_SIZE - 1))) !=
 879             (((unsigned long) hdr + size +
 880               QETH_IP_HEADER_SIZE) & (~(PAGE_SIZE - 1)))) {
 881                 PRINT_ERR("qeth_prepare_skb: misaligned "
 882                           "packet on interface %s. Discarded.",
 883                           QETH_CARD_IFNAME(card));
 884                 return NULL;
 885         }
 886         return hdr;
 887 }
 888
 889
 890 static inline int
 891 qeth_get_hlen(__u8 link_type)
 892 {
 893 #ifdef CONFIG_QETH_IPV6
 894         switch (link_type) {
 895         case QETH_LINK_TYPE_HSTR:
 896         case QETH_LINK_TYPE_LANE_TR:
 897                 return sizeof(struct qeth_hdr_tso) + TR_HLEN;
 898         default:
 899 #ifdef CONFIG_QETH_VLAN
 900                 return sizeof(struct qeth_hdr_tso) + VLAN_ETH_HLEN;
 901 #else
 902                 return sizeof(struct qeth_hdr_tso) + ETH_HLEN;
 903 #endif
 904         }
 905 #else  /* CONFIG_QETH_IPV6 */
 906 #ifdef CONFIG_QETH_VLAN
 907         return sizeof(struct qeth_hdr_tso) + VLAN_HLEN;
 908 #else
 909         return sizeof(struct qeth_hdr_tso);
 910 #endif
 911 #endif /* CONFIG_QETH_IPV6 */
 912 }
 913
 914 static inline unsigned short
 915 qeth_get_netdev_flags(struct qeth_card *card)
 916 {
 917         if (card->options.layer2)
 918                 return 0;
 919         switch (card->info.type) {
 920         case QETH_CARD_TYPE_IQD:
 921                 return IFF_NOARP;
 922 #ifdef CONFIG_QETH_IPV6
 923         default:
 924                 return 0;
 925 #else
 926         default:
 927                 return IFF_NOARP;
 928 #endif
 929         }
 930 }
 931
 932 static inline int
 933 qeth_get_initial_mtu_for_card(struct qeth_card * card)
 934 {
 935         switch (card->info.type) {
 936         case QETH_CARD_TYPE_UNKNOWN:
 937                 return 1500;
 938         case QETH_CARD_TYPE_IQD:
 939                 return card->info.max_mtu;
 940         case QETH_CARD_TYPE_OSAE:
 941                 switch (card->info.link_type) {
 942                 case QETH_LINK_TYPE_HSTR:
 943                 case QETH_LINK_TYPE_LANE_TR:
 944                         return 2000;
 945                 default:
 946                         return 1492;
 947                 }
 948         default:
 949                 return 1500;
 950         }
 951 }
 952
 953 static inline int
 954 qeth_get_max_mtu_for_card(int cardtype)
 955 {
 956         switch (cardtype) {
 957         case QETH_CARD_TYPE_UNKNOWN:
 958                 return 61440;
 959         case QETH_CARD_TYPE_OSAE:
 960                 return 61440;
 961         case QETH_CARD_TYPE_IQD:
 962                 return 57344;
 963         default:
 964                 return 1500;
 965         }
 966 }
 967
 968 static inline int
 969 qeth_get_mtu_out_of_mpc(int cardtype)
 970 {
 971         switch (cardtype) {
 972         case QETH_CARD_TYPE_IQD:
 973                 return 1;
 974         default:
 975                 return 0;
 976         }
 977 }
 978
 979 static inline int
 980 qeth_get_mtu_outof_framesize(int framesize)
 981 {
 982         switch (framesize) {
 983         case 0x4000:
 984                 return 8192;
 985         case 0x6000:
 986                 return 16384;
 987         case 0xa000:
 988                 return 32768;
 989         case 0xffff:
 990                 return 57344;
 991         default:
 992                 return 0;
 993         }
 994 }
 995
 996 static inline int
 997 qeth_mtu_is_valid(struct qeth_card * card, int mtu)
 998 {
 999         switch (card->info.type) {
1000         case QETH_CARD_TYPE_OSAE:
1001                 return ((mtu >= 576) && (mtu <= 61440));
1002         case QETH_CARD_TYPE_IQD:
1003                 return ((mtu >= 576) &&
1004                         (mtu <= card->info.max_mtu + 4096 - 32));
1005         case QETH_CARD_TYPE_UNKNOWN:
1006         default:
1007                 return 1;
1008         }
1009 }
1010
1011 static inline int
1012 qeth_get_arphdr_type(int cardtype, int linktype)
1013 {
1014         switch (cardtype) {
1015         case QETH_CARD_TYPE_OSAE:
1016                 switch (linktype) {
1017                 case QETH_LINK_TYPE_LANE_TR:
1018                 case QETH_LINK_TYPE_HSTR:
1019                         return ARPHRD_IEEE802_TR;
1020                 default:
1021                         return ARPHRD_ETHER;
1022                 }
1023         case QETH_CARD_TYPE_IQD:
1024         default:
1025                 return ARPHRD_ETHER;
1026         }
1027 }
1028
1029 #ifdef CONFIG_QETH_PERF_STATS
1030 static inline int
1031 qeth_get_micros(void)
1032 {
1033         return (int) (get_clock() >> 12);
1034 }
1035 #endif
1036
1037 static inline int
1038 qeth_get_qdio_q_format(struct qeth_card *card)
1039 {
1040         switch (card->info.type) {
1041         case QETH_CARD_TYPE_IQD:
1042                 return 2;
1043         default:
1044                 return 0;
1045         }
1046 }
1047
1048 static inline void
1049 qeth_ipaddr4_to_string(const __u8 *addr, char *buf)
1050 {
1051         sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
1052 }
1053
1054 static inline int
1055 qeth_string_to_ipaddr4(const char *buf, __u8 *addr)
1056 {
1057         const char *start, *end;
1058         char abuf[4];
1059         char *tmp;
1060         int len;
1061         int i;
1062
1063         start = buf;
1064         for (i = 0; i < 3; i++) {
1065                 if (!(end = strchr(start, '.')))
1066                         return -EINVAL;
1067                 len = end - start;
1068                 memset(abuf, 0, 4);
1069                 strncpy(abuf, start, len);
1070                 addr[i] = simple_strtoul(abuf, &tmp, 10);
1071                 start = end + 1;
1072         }
1073         memset(abuf, 0, 4);
1074         strcpy(abuf, start);
1075         addr[3] = simple_strtoul(abuf, &tmp, 10);
1076         return 0;
1077 }
1078
1079 static inline void
1080 qeth_ipaddr6_to_string(const __u8 *addr, char *buf)
1081 {
1082         sprintf(buf, "%02x%02x:%02x%02x:%02x%02x:%02x%02x"
1083                      ":%02x%02x:%02x%02x:%02x%02x:%02x%02x",
1084                      addr[0], addr[1], addr[2], addr[3],
1085                      addr[4], addr[5], addr[6], addr[7],
1086                      addr[8], addr[9], addr[10], addr[11],
1087                      addr[12], addr[13], addr[14], addr[15]);
1088 }
1089
1090 static inline int
1091 qeth_string_to_ipaddr6(const char *buf, __u8 *addr)
1092 {
1093         const char *start, *end;
1094         u16 *tmp_addr;
1095         char abuf[5];
1096         char *tmp;
1097         int len;
1098         int i;
1099
1100         tmp_addr = (u16 *)addr;
1101         start = buf;
1102         for (i = 0; i < 7; i++) {
1103                 if (!(end = strchr(start, ':')))
1104                         return -EINVAL;
1105                 len = end - start;
1106                 memset(abuf, 0, 5);
1107                 strncpy(abuf, start, len);
1108                 tmp_addr[i] = simple_strtoul(abuf, &tmp, 16);
1109                 start = end + 1;
1110         }
1111         memset(abuf, 0, 5);
1112         strcpy(abuf, start);
1113         tmp_addr[7] = simple_strtoul(abuf, &tmp, 16);
1114         return 0;
1115 }
1116
1117 static inline void
1118 qeth_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
1119                       char *buf)
1120 {
1121         if (proto == QETH_PROT_IPV4)
1122                 return qeth_ipaddr4_to_string(addr, buf);
1123         else if (proto == QETH_PROT_IPV6)
1124                 return qeth_ipaddr6_to_string(addr, buf);
1125 }
1126
1127 static inline int
1128 qeth_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
1129                       __u8 *addr)
1130 {
1131         if (proto == QETH_PROT_IPV4)
1132                 return qeth_string_to_ipaddr4(buf, addr);
1133         else if (proto == QETH_PROT_IPV6)
1134                 return qeth_string_to_ipaddr6(buf, addr);
1135         else
1136                 return -EINVAL;
1137 }
1138
1139 extern int
1140 qeth_setrouting_v4(struct qeth_card *);
1141 extern int
1142 qeth_setrouting_v6(struct qeth_card *);
1143
1144 extern int
1145 qeth_add_ipato_entry(struct qeth_card *, struct qeth_ipato_entry *);
1146
1147 extern void
1148 qeth_del_ipato_entry(struct qeth_card *, enum qeth_prot_versions, u8 *, int);
1149
1150 extern int
1151 qeth_add_vipa(struct qeth_card *, enum qeth_prot_versions, const u8 *);
1152
1153 extern void
1154 qeth_del_vipa(struct qeth_card *, enum qeth_prot_versions, const u8 *);
1155
1156 extern int
1157 qeth_add_rxip(struct qeth_card *, enum qeth_prot_versions, const u8 *);
1158
1159 extern void
1160 qeth_del_rxip(struct qeth_card *, enum qeth_prot_versions, const u8 *);
1161
1162 extern int
1163 qeth_notifier_register(struct task_struct *, int );
1164
1165 extern int
1166 qeth_notifier_unregister(struct task_struct * );
1167
1168 extern void
1169 qeth_schedule_recovery(struct qeth_card *);
1170
1171 extern int
1172 qeth_realloc_buffer_pool(struct qeth_card *, int);
1173
1174 extern int
1175 qeth_set_large_send(struct qeth_card *, enum qeth_large_send_types);
1176
1177 extern void
1178 qeth_fill_header(struct qeth_card *, struct qeth_hdr *,
1179                  struct sk_buff *, int, int);
1180 extern void
1181 qeth_flush_buffers(struct qeth_qdio_out_q *, int, int, int);
1182
1183 #endif /* __QETH_H__ */